#### tofu

##### Newbie level 5

**no convergence in operating point**

I'm running transient in hspice and unable to get the circuit to converge.

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**warning** Due to a floating point overflow problem,

the damped pseudo-tran method was used.

Also, gmindc was set to 1.0000E-11

**diagnostic** time step too small in pseudo tran. delta= 8.8818E-19

no convergence in damped pseudo-transient, trying gmath ramping method

**diagnostic** no convergence in gmath method gmath= 0.00

**diagnostic** begin gshunt ramping

**diagnostic** time step too small in pseudo tran. delta= 5.8208E-19

**diagnostic** time step too small in pseudo tran. delta= 4.2333E-19

**diagnostic** time step too small in pseudo tran. delta= 3.0043E-19

**diagnostic** time step too small in pseudo tran. delta= 2.6234E-19

**diagnostic** time step too small in pseudo tran. delta= 9.8683E-19

**diagnostic** time step too small in pseudo tran. delta= 9.5827E-19

**diagnostic** time step too small in pseudo tran. delta= 9.4461E-19

**diagnostic** time step too small in pseudo tran. delta= 9.3792E-19

**diagnostic** time step too small in pseudo tran. delta= 9.3461E-19

**diagnostic** time step too small in pseudo tran. delta= 9.3296E-19

**diagnostic** time step too small in pseudo tran. delta= 9.3214E-19

**diagnostic** time step too small in pseudo tran. delta= 9.3173E-19

**diagnostic** time step too small in pseudo tran. delta= 9.3153E-19

**diagnostic** time step too small in pseudo tran. delta= 9.3142E-19

**diagnostic** time step too small in pseudo tran. delta= 9.3137E-19

**diagnostic** time step too small in pseudo tran. delta= 9.3135E-19

**diagnostic** time step too small in pseudo tran. delta= 9.3134E-19

**diagnostic** time step too small in pseudo tran. delta= 9.3133E-19

**diagnostic** although this circuit has failed to converge

to gshunt= 0.00 , it did converge to a gshunt= 1.000E-03

**error** no convergence in operating point

***

*** hspice diagnostic ***

nonconvergent voltage failures= 0

nonconvergent element current failures= 0

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Here's my TRAN section :

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.TRAN 1.00000E-10 14.00000E-08 START= 0.0000

.TEMP 25.0000

.OP

.save

.OPTION WL post probe opts ACCT

+ PROBE=0

+ DELMAX = 1.00000E-09

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I tried RELTOL=.01 ALTINT=1 and other options but none of them seem to work.

What else is worth trying?

Any help is appreciated.